Re: Diff Additive
As far as I know, the additive is only required for models equipped with Ford's "Traction Lock" rearend. The posi unit needs a friction modifier to be added to the differential fluid to prevent it from foaming up as well as to eliminate any of the shudder sometimes associated with a posi unit.
1992 Ford Bronco
E4OD- B&M Stage 2 shift kit
Full 3" stainless Bassani Exhaust
32" BFG's/stock suspension
"No replacement for displacement."
"Our lugnuts require more torque than most Honda's produce!"